I'm wondering whether the 'Pipemaking & Maintenance' place should have two distinct areas.
It seems to me that these are two related but essentially different topics.
Pipemaking is by its nature an expert area. The 'Maintenance' area is of greatest benefit to those who are not expert.
I believe a separation would allow participants to find information more efficiently. Naturally anyone with relevant enquiries or suggestions would participate where it seems most useful.
Francis